embestmx6boards: Add SPL support

In order to boot faster with falcon mode, we need to add SPL
support to riotboard.

Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.com>

arch/arm/mach-imx/mx6/Kconfig

@@ -182,6 +182,7 @@ config TARGET_DISPLAY5
 config TARGET_EMBESTMX6BOARDS
 	bool "embestmx6boards"
 	select BOARD_LATE_INIT
+	select SUPPORT_SPL
 
 config TARGET_GE_BX50V3
 	bool "General Electric Bx50v3"

board/embest/mx6boards/MAINTAINERS

@@ -5,3 +5,4 @@ F:	board/embest/mx6boards/
 F:	include/configs/embestmx6boards.h
 F:	configs/marsboard_defconfig
 F:	configs/riotboard_defconfig
+F:	configs/riotboard_spl_defconfig

board/embest/mx6boards/mx6boards.c

@@ -608,3 +608,51 @@ int checkboard(void)
 
 	return 0;
 }
+
+#ifdef CONFIG_SPL_BUILD
+#include <spl.h>
+
+void board_init_f(ulong dummy)
+{
+	u32 cputype = cpu_type(get_cpu_rev());
+
+	switch (cputype) {
+	case MXC_CPU_MX6SOLO:
+		board_type = BOARD_IS_RIOTBOARD;
+		break;
+	case MXC_CPU_MX6D:
+		board_type = BOARD_IS_MARSBOARD;
+		break;
+	}
+	arch_cpu_init();
+
+	/* setup GP timer */
+	timer_init();
+
+#ifdef CONFIG_SPL_SERIAL_SUPPORT
+	setup_iomux_uart();
+	preloader_console_init();
+#endif
+}
+
+void board_boot_order(u32 *spl_boot_list)
+{
+	spl_boot_list[0] = BOOT_DEVICE_MMC1;
+}
+
+/*
+ * In order to jump to standard u-boot shell, you have to connect pin 5 of J13
+ * to pin 3 (ground).
+ */
+int spl_start_uboot(void)
+{
+	int gpio_key = IMX_GPIO_NR(4, 16);
+
+	gpio_direction_input(gpio_key);
+	if (gpio_get_value(gpio_key) == 0)
+		return 1;
+	else
+		return 0;
+}
+
+#endif

configs/riotboard_spl_defconfig

@@ -0,0 +1,48 @@
+CONFIG_ARM=y
+CONFIG_ARCH_MX6=y
+CONFIG_SYS_TEXT_BASE=0x17800000
+CONFIG_SPL_GPIO_SUPPORT=y
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_TARGET_EMBESTMX6BOARDS=y
+CONFIG_SPL_MMC_SUPPORT=y
+CONFIG_SPL_SERIAL_SUPPORT=y
+CONFIG_SPL=y
+CONFIG_SPL_LIBDISK_SUPPORT=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/boundary/nitrogen6x/nitrogen6s1g.cfg,SPL,MX6S,DDR_MB=1024"
+CONFIG_BOOTCOMMAND="run finduuid; run distro_bootcmd"
+# CONFIG_CONSOLE_MUX is not set
+CONFIG_SYS_CONSOLE_IS_IN_ENV=y
+CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE=y
+CONFIG_BOARD_EARLY_INIT_F=y
+CONFIG_SPL_RAW_IMAGE_SUPPORT=y
+CONFIG_SPL_EXT_SUPPORT=y
+CONFIG_SPL_OS_BOOT=y
+# CONFIG_CMD_FLASH is not set
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_SF=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_ENV_IS_IN_MMC=y
+CONFIG_DM=y
+CONFIG_FSL_ESDHC=y
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_SST=y
+CONFIG_PHYLIB=y
+CONFIG_MII=y
+CONFIG_SPI=y
+CONFIG_MXC_SPI=y
+CONFIG_DM_THERMAL=y
+CONFIG_USB=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_HOST_ETHER=y
+CONFIG_USB_ETHER_ASIX=y
+CONFIG_VIDEO=y
+# CONFIG_VIDEO_SW_CURSOR is not set
+CONFIG_OF_LIBFDT=y
+CONFIG_SPL_OF_LIBFDT=y

include/configs/embestmx6boards.h

@@ -109,6 +109,19 @@
 
 #include "mx6_common.h"
 
+#ifdef CONFIG_SPL
+#include "imx6_spl.h"
+/* RiOTboard */
+#define CONFIG_SYS_SPL_ARGS_ADDR 0x13000000
+#define CONFIG_SPL_FS_LOAD_KERNEL_NAME "uImage"
+#define CONFIG_SPL_FS_LOAD_ARGS_NAME "imx6dl-riotboard.dtb"
+
+#define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR        0 /* offset 69KB */
+#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR  0 /* offset 69KB */
+#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 0 /* offset 69KB */
+
+#endif
+
 /* 256M RAM (minimum), 32M uncompressed kernel, 16M compressed kernel, 1M fdt,
  * 1M script, 1M pxe and the ramdisk at the end */
 #define MEM_LAYOUT_ENV_SETTINGS \